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Creo Elements/Direct Modeling Personal Edition - a free 3D CAD tool for all of your modeling needs!  If you’ve always thought that 3D CAD software is complex, cumbersome and unreasonably expensive, it’s time for you to find out that there is an alternative that has neither of these characteristics and offers tons of functionality free of charge! Creo Elements/Direct Modeling Personal Edition is a freeware 3D CAD solution that enables you to create models containing up to 60 parts quickly and efficiently

MagicPlot Pro - an all-in-one plotting and visual analysis tool for researchers and engineers  An irreplaceable tool in the arsenal of any math student, researcher, scientist or engineer, MagicPlot Pro is a compact, powerful and efficient program for plotting, curve fitting and visual data analysis. Created by scientists for scientists, the software offers an unprecedented set of features and best-in-class flexibility for precise manual and automatic data analysis. A comprehensive set of graph editing tools makes it manifold